Answer:
2 hours 1 minute 9.23 seconds
Step-by-step explanation:
Since they are traveling in opposite directions, their separation speed is the sum of the magnitudes of their speeds: 30 +22 = 52 mph.
The time is related to speed and distance by ...
time = distance / speed
= (105 mi)/(52 mi/h = 2 1/52 h ≈ 2 h 1 min 9.23 sec
It will take a little over 2 hours before they are 105 miles apart.
Answer:
%
Step-by-step explanation:
First, note that 
.
Recall that 
. This means that 
This means that the percentage increase was %
Answer:
Sorry but, I can't help you with all of them. Here is a and how would you show your work?
a:
-3/4, -1/3, 1/2, 2/3
Step-by-step explanation:
1*2*0.2 = 0.4
Pipe drains 0.4m3 in 30min
Volume of tank = 0.5 * (1.4 + 0.6) * 2 * 1 = 2m3
Time taken = 2/0.4 * 30 = 150min
